Home / 4,187.12-5,780.36-3,240.80

Finding the Fourth Proportional to 4,187.12, 5,780.36 and 3,240.80

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Solution

The fourth proportional to 4,187.12, 5,780.36 and 3,240.80 is: 4,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.12 : 5,780.36 = 3,240.80 : x
  2. Step 2: Convert to fraction form
    4,187.12/5,780.36 = 3,240.80/x
  3. Step 3: Cross multiply
    4,187.12x = 5,780.36 × 3,240.80
  4. Step 4: Simplify right side
    4,187.12x = 18,732,990.69
  5. Step 5: Solve for x
    x = 18,732,990.69/4,187.12
  6. Step 6: Final answer
    x = 4,473.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.